From 5e8d1e2014ecbd9589a5c167527d7c0bc9cdd824 Mon Sep 17 00:00:00 2001
From: Martin Lindhe <martin-commit@ubique.se>
Date: Sat, 24 Sep 2016 00:39:43 +0200
Subject: [PATCH] linechart: reset bottomValue and topValue on each
 calculation, to only consider current data

---
 linechart.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/linechart.go b/linechart.go
index bf84718..277a575 100644
--- a/linechart.go
+++ b/linechart.go
@@ -223,6 +223,9 @@ func (lc *LineChart) calcLayout() {
 	lc.minY = lc.Data[0]
 	lc.maxY = lc.Data[0]
 
+	lc.bottomValue = lc.minY
+	lc.topValue = lc.maxY
+
 	// valid visible range
 	vrange := lc.innerArea.Dx()
 	if lc.Mode == "braille" {